在循环负荷下传感器中的运动电缆的机械性能和疲劳寿命分析
Weizhe Liang1, Wei Guan1, Ying Ding2
1Department of Astronautics and Mechanics, Harbin Institute of Technology, Harbin 150001, China.
Sensors (Basel, Switzerland)
|February 24, 2024
概括
优化航空发动机运动电缆包括尽量减少倾斜角度和固定点. 这种方法提高了机械性能,并延长了疲劳寿命,从而提高了传感器的可靠性.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 航空航天工程 航空航天工程
背景情况:
- 运动电缆对于航空发动机传感器稳定性至关重要,但具有复杂的结构.
- 传统方法不适合研究运动电缆力学和可靠性.
- 了解机械性能和疲劳寿命对于这些关键组件至关重要.
研究的目的:
- 开发一种用于分析运动电缆力学和可靠性的新方法.
- 研究倾斜角和固定点对电缆性能的影响.
- 确定最佳配置,以提高运动电缆疲劳寿命和结构完整性.
主要方法:
- 开发了一个简化的电缆模型,结合了异性质复合材料理论.
- 使用有限元分析 (FEA) 来模拟机械性能和疲劳寿命.
- 在联合作用下考虑了张力和扭力.
主要成果:
- 在运动电缆的倾斜角和极端应力之间存在正相关性.
- 确定了0°的最佳倾斜角.
- 减少固定点可以最大限度地减少额外的时刻,从而改善电缆的移动.
- 最佳配置涉及0°倾斜角和两个固定点.
- 在电缆中间确定了高压力区域,与疲劳寿命短的区域相对应.
结论:
- 尽量减少倾斜角和固定点的数量可以显著增加运动电缆疲劳寿命.
- 该研究为优化航空发动机应用中的运动电缆可靠性提供了建议.
- 拟议的模型提供了一种分析复杂电缆结构的新方法.
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